Realization of white-light-emitting diodes from a high-brightness zirconium-based metal-organic gel driven by the AIE effect - Details

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Developing　luminescent　materials　with　suitable　correlated　color　temperature　(CCT)　and　sufficient　color-rendering　index　(CRI)　is　a　challenging　problem　in　the　field　of　commercialized　warm　white　LED　lighting.　Herein,　a　novel　metal-organic　gel　(MOG)　material　named　YTU-G-1(SE)　was　synthesized,　consisting　of　zirconium　metal　coordinated　with　1,1,2,2-tetrakis(4-carboxyphenyl)　ethylene.　YTU-G-1(SE)　exhibits　strong　fluorescent　properties　with　an　aggregation-induced　emission　(AIE)　effect,　emitting　yellow-green　fluorescence　at　515　nm.　The　internal　and　external　quantum　efficiencies　(IQE/EQE)　of　YTU-G-1(SE)　are　close　to　unity,　with　values　of　95.74　±　0.5%　and　88.67　±　0.5%,　respectively.　Finally,　we　combined　YTU-G-1(SE)　with　a　commercial　blue　chip　and　a　commercial　red　phosphor　(Sr,Ca)AlSiN3:Eu2+　to　fabricate　a　warm　white　light　LED　with　a　color　temperature　of　3736　K,　a　color-rendering　index　Ra　of　88.2,　and　a　lumen　efficiency　of　79.42　lm　W−1.　This　work　provides　a　new　approach　to　regulating　the　emission　of　AIE　and　offers　a　novel　idea　for　developing　high-performance　warm-white　pc-WLEDs.　©　2024　The　Royal　Society　of　Chemistry

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[ 1 ] [Song J.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 2 ] [Jiang L.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 3 ] [Wang X.]MOE Key Laboratory for Analytical Science of Food Safety and Biology, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, China
[ 4 ] [Hou C.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 5 ] [Wang X.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 6 ] [Xu Z.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 7 ] [Liang C.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 8 ] [Yuan M.]School of Civil Engineering, Yantai University, Yantai, 264005, China
[ 9 ] [Tan C.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China
[ 10 ] [Yang J.]College of Chemical and Biological Engineering, Shandong University of Science and Technology, Shandong, Qingdao, 266590, China
[ 11 ] [Song E.]State Key Laboratory of Luminescent Materials and Devices, Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
[ 12 ] [Wang Y.]State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, China
[ 13 ] [Liu W.]School of Environmental and Material Engineering, Yantai University, Shandong, Yantai, 264005, China

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Dalton Transactions

ISSN： 1477-9226

Year： 2024

Issue： 11

Volume： 53

Page： 4968-4975

3 . 5 0 0

JCR@2023

CAS Journal Grade：2

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